How to leverage form validation and model binding when control span many panels?

I have an application that allow building a complex queries, that are defined by 50 controls. Of course, the controls span many panels, tabs. I would like my UI controls are binding/linked both ways to my model. The Ext JS 4 documentation seems to show that form has some support to bind to model, also it's adding validation support, which could be useful.

But in my scenario, my "form" is not really a UI concept, it's more a model, a state. How can I use Ext JS 4 form functionalities when my UI form controls are spanning lot of UI panels?